共查询到19条相似文献,搜索用时 109 毫秒
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目前,中国的城市生活垃圾产生量已占到全球垃圾产生量的13%,其处理处置已然成为我国建设“无废城市”、实现“碳达峰”“碳中和”目标的关键。对标和梳理了国际通行的4种温室气体排放核算方法,分析了各方法应用于我国城市生活垃圾碳减排核算的适用性和不足。进而基于全生命周期评价方法,在调研分析国内外案例的基础上,总结提出了优化焚烧技术性能、高效利用填埋气、厌氧消化处理厨余垃圾、分类回收利用可回收物、建设生活垃圾处理产业园区等城市生活垃圾碳减排路径,并对每条路径的发展方向进行展望,旨在为城市生活垃圾处理行业在“十四五”期间实现全生命周期绿色、低碳发展提供理论支撑。 相似文献
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沈阳市源分类有机生活垃圾堆肥研究 总被引:3,自引:0,他引:3
阐述了城市有机生活垃圾源分类的重要性,同时对源分类城市有机生活垃圾进行两组不同物料配比的堆肥实验,在堆肥周期内对堆体的重要影响参数(水分、有机分、灰分、堆体温度、pH、堆体质量等)进行了测定,最后根据实验数据分析堆肥实验的影响因素并得出结论:(1)沈阳市生活垃圾含水率偏高不利于直接进行堆肥,添加秸秆作为填充剂进行堆肥是可行的;(2)沈阳市城市生活有机垃圾和秸秆混合后进行为期21 d堆肥处理,其堆肥最终生物降解率为60%~74%.其物料的含水率对生物降解率有较大的影响. 相似文献
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以广州市近年生活垃圾的干基碳、氢元素含量与干基高位发热量的数据为基础,推算出干基碳、氢元素含量与干基高位发热量关系的经验公式.并用实验验证了该经验公式的可行性. 相似文献
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城市生活垃圾热值估算方法研究 总被引:3,自引:0,他引:3
把城市生活垃圾划分为40种组分,对每种组分均分布测试了弹筒热值,高位热值,低位热值,全硫含量,全水分,碳含量等。经数理统计分析,建立了3个城市生活垃圾低位热值痢化估算模式。应用估算模式对深圳市城市生活垃圾热值进行了检验分析和估算。 相似文献
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我国城市生活垃圾分类收集与收费方式探讨 总被引:6,自引:0,他引:6
对我国城市生活垃圾分类收集和废品回收利用状况进行了评估,比较了我国与发达国家废纸的回收情况以及垃圾中其他成分,介绍了德国、美国垃圾分类收集情况,从而提出我国生活垃圾分类收集在厨余垃圾、家庭有毒有害垃圾和包装垃圾三个方面有待突破,垃圾收费需要充分考虑实际条件才能推行。最后对垃圾分类收集进行了经济分析。 相似文献
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以粤西地区某生活垃圾填埋场渗沥液调节池的设计为例,探讨了渗沥液调节池规模计算的新思路,旨在提出适合于珠三角大降雨量地区生活垃圾卫生填埋场渗沥液调节容量及处理规模的估算方法. 相似文献
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The estimation of breakthrough time for multicomponent organic solvent vapors on activated carbon fixed beds is significantly complicated and difficult. This paper describes a simple estimation method of breakthrough time for the first component (foremost breakthrough component) in two- or three-component organic solvent vapors on an activated carbon fixed bed. The breakthrough time for the first component was expressed by the harmonic mean value of the breakthrough times in each pure component. Estimated breakthrough times were compared with the experimental ones. 相似文献
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Toxicity of industrial wastes and waste leaching test eluates containing organic compounds 总被引:1,自引:0,他引:1
Schultz E Vaajasaari K Joutti A Ahtiainen J 《Ecotoxicology and environmental safety》2002,52(3):248-255
Leaching tests, CEN prEN 12457-2, CEN PrEN 12457-3, and NEN 7349, were conducted for varnish residue and urea resin waste, two industrial wastes containing organic chemicals. The leaching test eluates were analyzed for solvent concentrations and total organic carbon. Aqueous leaching tests were found to be suitable for both chemical and biological testing. Ecotoxicity was assessed by luminescent bacteria, plant root growth, reverse electron transport, and ToxiChromopad. The eluates were highly toxic but the toxicity decreased in later stages of the multistep leaching test (NEN 7349). Urea resin eluates were significantly less toxic than varnish residue eluates. The solid wastes markedly inhibited plant seed germination before and after the leaching test (CEN prEN 12457-3). The solid wastes were not biologically degradable in the standard test (ISO 14593), whereas the eluates from the CEN prEN 12457-3 test degraded slowly. 相似文献
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城市生活垃圾处理现状及发展趋势 总被引:6,自引:3,他引:6
目的:论述了垃圾处理现状及存在的问题,为管理者和工程技术人员提供参考。方法:用系统工程方法比较了卫生填埋、堆肥及焚烧的技术经济指标,介绍了我国生活垃圾的产量及成分,分析了垃圾处理技术的发展方向。结论:应重视收运系统和卫生填埋场的建设。 相似文献
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Municipal solid waste (MSW) composts carry high amounts of trace metals and organic complexing agents that may influence metal bioavailability and mobility after application to soils. In order to assess the degree of organic complexation of trace metals in the solution phase of MSW compost and the relevance of organic ligand type, size exclusion chromatography (SEC) was applied to compost-extracted organic ligands. Adjustment of the elution conditions minimized the interaction with the gel matrix for compost humic substances and dissolved organic matter (DOM) fractions. The SEC was then used to separate the aqueous compost extract into samples with distinct differences in chemical constituents. The highest quantities of Cu, Zn, Ni, Mn, and Cd were found to coelute with the main peak of the SEC elution curve, which, as observed by Fourier-transformed infrared (FTIR) spectroscopy, also had the highest density of carboxyl groups. The ratio of aromatic to aliphatic structures was higher for eluates with low retention times, and cations such as Al, Cr, and Fe were preferably associated with these larger organic molecules. All trace metals in the compost solution phase were bound mostly to DOM rather than forming inorganic complexes. 相似文献
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城市生活垃圾填埋场封场技术 总被引:9,自引:2,他引:7
结合我国第一个城市生活垃圾填埋场封场示范工程-深圳市玉龙坑垃圾填埋场封场工程, 生活垃圾填埋场封场技术的探讨。生活垃圾填埋场的封场,由终场覆盖与生态恢复系统,雨水导排与防渗系统,等组成。 相似文献